Treatment of printing and dyeing wastewater by coagulation sedimentation + hydrolysis acidification+membrane bioreactor system
Revised date: 2009-12-08
Online published: 2010-10-01
The feasibility of treating printing and dyeing wastewater by coagulation sedimentation + hydrolysis acidification+ membrane bioreactor process is discussed. It is pretty determined that PAC is the best coagulant for treating printing and dyeing wastewater. It is comparatively reasonable that in the hydrolysis acidification reactor,MLSS=8 g/L， and HRT=16 h,while in MBR reactor,MLSS=8 g/L,and HRT=8 h. The effect of MBR reactor on the removal rate of organisms mainly depends on the impact of biological reaction. The interception action of membranes strengthens its effect on the removal rates of chroma and COD. Continuous and steady treatment effects can be obtained when this process is used for treating printing and dyeing wastewater. The effluent water quality meets the requirements of the first class of Discharge Standard of Textile Industry Water Pollutants.
Gao Liqiong, Zhang Yufeng, Zhang Zhaohui, Liu Enhua . Treatment of printing and dyeing wastewater by coagulation sedimentation + hydrolysis acidification+membrane bioreactor system[J]. Industrial Water Treatment, 2010 , 30(5) : 54 -56 . DOI: 10.11894/1005-829x.2010.30.(05).54
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